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Not working yet. Added code to test.c to test the API.
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‎src/examples/CMakeLists.txt

Lines changed: 6 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -5,8 +5,9 @@ project(plc_comm_examples VERSION 0.1.0 LANGUAGES C)
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include_directories(../include)
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# example executables
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add_executable(example1 example1.c)
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add_executable(example2 example2.c)
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add_executable(example3 example3.c)
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add_executable(example4 example4.c)
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add_executable(example5 example5.c)
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add_executable(test test.c)
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# add_executable(example1 example1.c)
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# add_executable(example2 example2.c)
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# add_executable(example3 example3.c)
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# add_executable(example4 example4.c)
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# add_executable(example5 example5.c)

‎src/examples/test.c

Lines changed: 192 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,192 @@
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/***************************************************************************
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* Copyright (C) 2024 by Kyle Hayes *
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* Author Kyle Hayes kyle.hayes@gmail.com *
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* *
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* This software is available under either the Mozilla Public License *
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* version 2.0 or the GNU LGPL version 2 (or later) license, whichever *
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* you choose. *
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* *
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* MPL 2.0: *
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* *
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* This Source Code Form is subject to the terms of the Mozilla Public *
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* License, v. 2.0. If a copy of the MPL was not distributed with this *
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. *
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* *
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* *
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* LGPL 2: *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU Library General Public License as *
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* published by the Free Software Foundation; either version 2 of the *
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* License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include <inttypes.h>
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#include <stdio.h>
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#include <plc_comm.h>
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#define NUM_ELEMENTS (10)
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/**
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* @brief This tests the simplest use of the library
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*
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* This function shows an example of how to read a single tag. All memory and other resourcess
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* are managed by the library. Only the basic functions are used:
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*
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* plc_comm_id_t plc_comm_conn_open(plc_comm_plc_type_t plc_type, const char *address, plc_comm_config_t *config, int32_t timeout_ms);
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* plc_comm_id_t plc_comm_conn_do_request(plc_comm_id_t conn_id, const char *tag_name, int32_t num_elements, plc_comm_request_type_t op, void *translated_data, int32_t translated_data_size, plc_comm_config_t *config, int32_t timeout_ms);
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* int32_t plc_comm_result_batch_get_status(plc_comm_id_t result_batch_id);
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* int32_t plc_comm_conn_dispose(plc_comm_id_t conn_id, int32_t timeout_ms);
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*
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* @return int - status
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*/
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int main(void)
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{
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value_status_t rc = VAL_OK;
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value_p plc = NULL;
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do {
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value_status_t rc = VAL_OK;
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uint32_t num_tags = 0;
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rc = value_open_device("protocol=ab-eip&gateway=10.206.1.39&path=1,0&plc=ControlLogix", &plc);
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if(rc != VAL_OK) {
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info("WARN: Unable to open connection to the PLC!");
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break;
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}
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rc = value_structure_get_num_fields(plc, &num_tags);
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if(rc != VAL_OK) {
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info("WARN: Unable to get the number of tags!");
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break;
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}
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for(uint32_t i=0; i < num_tags && rc = VAL_OK; i++) {
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const char *tag_name = NULL;
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value_p tag_val;
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value_type_t tag_type = VAL_TYPE_NONE;
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rc = value_structure_get_field_name(plc, i, &tag_name);
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if(rc != VAL_OK) {
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info("WARN: Unable to get the number of tags!");
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break;
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}
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rc = value_structure_get_field_by_index(plc, i, &tag_val);
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if(rc != VAL_OK) {
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info("WARN: Unable to get the field %u by index!", i);
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break;
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}
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rc = value_get_type(tag_val, &tag_type);
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if(rc != VAL_OK) {
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info("WARN: Unable to get the number of tags!");
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break;
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}
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printf("Tag %s is of type ");
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switch(tag_type) {
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case VAL_TYPE_BOOL:
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printf(" Bool.\n");
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break;
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case VAL_TYPE_U8:
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printf(" U8.\n");
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break;
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case VAL_TYPE_U16:
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printf(" U16.\n");
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break;
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case VAL_TYPE_U32:
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printf(" U32.\n");
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break;
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case VAL_TYPE_U64:
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printf(" U64.\n");
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break;
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case VAL_TYPE_I8:
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printf(" I8.\n");
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break;
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case VAL_TYPE_I16:
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printf(" I16.\n");
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break;
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case VAL_TYPE_I32:
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printf(" I32.\n");
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break;
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case VAL_TYPE_I64:
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printf(" I64.\n");
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break;
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case VAL_TYPE_F32:
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printf(" Float32.\n");
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break;
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case VAL_TYPE_F64:
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printf(" Float64.\n");
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break;
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case VAL_TYPE_ARRAY: {
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uint32_t num_elements = 0;
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value_type_t element_type = VAL_TYPE_NONE;
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printf(" Array");
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rc = value_array_get_num_elements(tag_val, &num_elements);
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if(rc != VAL_OK) {
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info("WARN: Unable to get the number of tags!");
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break;
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}
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printf("[%u]", num_elements);
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rc = value_array_get_element_type(tag_val, &element_type);
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if(rc != VAL_OK) {
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info("WARN: Unable to get the element type of the array!");
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break;
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}
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printf(" elements of type %u.\n", element_type);
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}
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break;
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case VAL_TYPE_STRUCTURE: {
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uint32_t num_fields = 0;
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printf(" Structure ");
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rc = value_structure_get_num_fields(tag_val, &num_fields);
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if(rc != VAL_OK) {
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info("WARN: Unable to get the number of tags!");
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break;
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}
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printf("of %u fields.\n", num_fields);
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}
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break;
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default:
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printf("Unknown type!\n");
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break;
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}
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}
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} while(0);
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return rc;
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}

‎src/lib/CMakeLists.txt

Lines changed: 13 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -6,16 +6,25 @@ include_directories(..)
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# set up paths to get included libplctag header and library
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include_directories(../../res/include)
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set(CMAKE_PREFIX_PATH "../../res/bin;${CMAKE_PREFIX_PATH}")
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add_library(libplctag STATIC IMPORTED)
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# set(CMAKE_PREFIX_PATH "../../res/bin;${CMAKE_PREFIX_PATH}")
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# add_library(libplctag STATIC IMPORTED)
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12-
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fms-extensions ")
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# set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fms-extensions ")
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# library
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add_library(plc_comm_lib
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add_library(plc_comm_lib SHARED
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plc_comm.c
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utils.c
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../../res/bin/libplctag.a
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)
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# require at least C11
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set_property(TARGET plc_comm_lib PROPERTY C_STANDARD 11)
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target_compile_options(plc_comm_lib PUBLIC --std=c11)
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target_compile_options(plc_comm_lib PUBLIC -fms-extensions)
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target_compile_options(plc_comm_lib PUBLIC -Wno-microsoft-anon-tag)
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# target_link_options(plc_comm_lib PUBLIC "LINKER:../../res/bin/libplctag.a")
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# target_link_libraries(plc_comm_lib libplctag)

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